Terminals Of ECM [09/2014 - 10/2015]

Fig 1: ECM Connector Terminal Identification - Engine Control System

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HINT: 

The standard normal voltage between each pair of the ECM terminals is shown in the table below. The appropriate conditions for checking each pair of the terminals are also indicated. The result of checks should be compared with the standard normal voltage for that pair of terminals, displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.

HINT: 

*: The ECM terminal voltage is constant regardless of the output voltage from the sensor.

1. WAVEFORM 1 
   Fig 2: Waveform 1

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   CAMSHAFT TIMING OIL CONTROL VALVE (OCV)
   
   

   ECM Terminal Name	Between OC1+ and OC1- or OC2+ and OC2- Between OE1+ and OE1- or OE2+ and OE2-
   Tester Range	5 V/DIV., 1 ms./DIV.
   Condition	Idling with warm engine

2. WAVEFORM 2 
   Fig 3: Identifying Waveform 2

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   AIR FUEL RATIO SENSOR HEATER:
   
   

   ECM Terminal Name	Between HA1A and E04 or HA2A and E05
   Tester Range	5 V/DIV, 10 ms./DIV
   Condition	Idling with warm engine

   HINT: 

   The wavelength varies in accordance with the engine operating condition.

3. WAVEFORM 3 
   Fig 4: Waveform 3

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   HEATED OXYGEN SENSOR
   
   

   ECM Terminal Name	Between OX1B and E2 or OX2B and E2
   Tester Range	0.2 V/DIV., 200 ms./DIV.
   Condition	Engine speed maintained at 2500 rpm for 2 minutes after warming up engine

   HINT: 

   In Data List, item O2S B1S2 and O2S B2S2 shows the ECM input values from the heated oxygen sensor.

4. WAVEFORM 4 
   Fig 5: Waveform 4

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   FUEL INJECTOR (FOR DIRECT INJECTION) NO. 1 (TO NO. 6) INJECTION SIGNAL
   
   

   ECM Terminal Name	Between #1 (to #6) and E1
   Tester Range	2 V/DIV., 20 ms./DIV.
   Condition	Idling with warm engine (direct injection control)

   HINT: 

   • The wavelength becomes shorter as the engine speed increases.
   • When the direct injection injectors are operating, Direct is displayed for Injection Way of the Data List.
5. WAVEFORM 5 
   Fig 6: Waveform 5

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   FUEL INJECTOR (FOR DIRECT INJECTION) NO. 1 (TO NO. 6) INJECTION SIGNAL:
   
   

   ECM Terminal Name	Between #10 (to #60) and E01
   Tester Range	20 V/DIV., 1 ms./DIV.
   Condition	Idling with warm engine (port injection control)

   HINT: 

   • The wavelength becomes shorter as the engine speed increases.
   • When the port injection injectors are operating, Port is displayed for Injection Way of the Data List.
6. WAVEFORM 6 
   Fig 7: Waveform 6

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   KNOCK SENSOR
   
   

   ECM Terminal Name	Between KNK1 and EKNK Between KNK2 and EKN2
   Tester Range	1 V/DIV., 1 ms./DIV.
   Condition	Engine speed maintained at 4000 rpm after warming up engine

   HINT: 

   • The wavelength becomes shorter as the engine speed increases.
   • The waveforms and amplitudes displayed differ slightly depending on the vehicle.
7. WAVEFORM 7 
   Fig 8: Waveform 7

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   CRANKSHAFT POSITION SENSOR AND VVT SENSOR FOR INTAKE CAMSHAFT
   
   

   ECM Terminal Name	Between NE+ and NE- Between VV1+ and VV1- or VV2+ and VV2-
   Tester Range	5 V/DIV., 20 ms./DIV.
   Condition	Idling with warm engine

   HINT: 

   The wavelength becomes shorter as the engine speed increases.

8. WAVEFORM 8 
   Fig 9: Waveform 8

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   CRANKSHAFT POSITION SENSOR AND VVT SENSOR FOR EXHAUST CAMSHAFT
   
   

   ECM Terminal Name	Between NE+ and NE- Between EV1+ and EV1- or EV2+ and EV2-
   Tester Range	5 V/DIV., 20 ms./DIV.
   Condition	Idling with warm engine

   HINT: 

   The wavelength becomes shorter as the engine speed increases.

9. WAVEFORM 9 
   Fig 10: Waveform 9

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   IGNITER IGT SIGNAL (FROM ECM TO IGNITER) AND IGNITER IGF SIGNAL (FROM IGNITER TO ECM)
   
   

   ECM Terminal Name	CH1: Between IGT (1 to 6) and E1 CH2: Between IGF1 and E1 or IGF2 and E1
   Tester Range	2 V/DIV., 20 ms./DIV.
   Condition	Idling with warm engine

   HINT: 

   The wavelength becomes shorter as the engine speed increases.

10. WAVEFORM 10 
    Fig 11: Waveform 10

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    PURGE VSV
    
    

    ECM Terminal Name	Between PRG and E1
    Tester Range	10 V/DIV., 20 ms./DIV.
    Condition	Idling, under purge control

    HINT: 

    If the waveform is not similar to the illustration, check the waveform again after idling for 10 minutes or more.

11. WAVEFORM 11 
    Fig 12: Waveform 11

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    THROTTLE ACTUATOR POSITIVE TERMINAL
    
    

    ECM Terminal Name	Between M+ and ME01
    Tester Range	5 V/DIV., 1 ms./DIV.
    Condition	Idling with warm engine

    HINT: 

    The duty ratio varies depending on the throttle actuator operation.

12. WAVEFORM 12 
    Fig 13: Waveform 12

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    THROTTLE ACTUATOR NEGATIVE TERMINAL
    
    

    ECM Terminal Name	Between M- and ME01
    Tester Range	5 V/DIV., 1 ms./DIV.
    Condition	Idling with warm engine

    HINT: 

    The duty ratio varies depending on the throttle actuator operation.

13. WAVEFORM 13 
    Fig 14: Waveform 13

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    ENGINE SPEED SIGNAL
    
    

    ECM Terminal Name	Between TACH and E1
    Tester Range	5 V/DIV., 10 ms./DIV.
    Condition	Idling with warm engine

    HINT: 

    The wavelength becomes shorter as the engine speed increases.

14. WAVEFORM 14 
    Fig 15: Waveform 14

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    INJECTOR FOR DIRECT INJECTION NO. 1 (TO NO. 6) INJECTION SIGNAL AND INJECTION CONFIRMATION SIGNAL
    
    

    ECM Terminal Name	CH1: Between #1 or #4 and E1, CH2: Between INJ1 and E1 CH1: Between #2 or #5 and E1, CH2: Between INJ2 and E1 CH1: Between #3 or #6 and E1, CH2: Between INJ3 and E1
    Tester Range	2 V/DIV., 20 ms./DIV.
    Condition	Idling with warm engine (direct injection control)

    HINT: 

    The wavelength becomes shorter as the engine speed increases.

15. WAVEFORM 15 
    Fig 16: Waveform 15

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    FUEL PUMP FOR HIGH PRESSURE (SPILL VALVE)
    
    

    ECM Terminal Name	CH1: Between FPD and E1 CH2: Between FPF and E1
    Tester Range	2 V/DIV., 5 ms./DIV.
    Condition	Idling with warm engine (direct injection control)

16. WAVEFORM 16 
    Fig 17: Waveform 16

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    CAN COMMUNICATION SIGNAL
    
    

    ECM Terminal Name	Between CANH and E1 Between CANP and E1
    Tester Range	1 V/DIV., 10 μs/DIV.
    Condition	Power switch on (IG)

    HINT: 

    The waveform varies depending on the CAN communication signal.

17. WAVEFORM 17 
    Fig 18: Waveform 17

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    CAN COMMUNICATION SIGNAL
    
    

    ECM Terminal Name	Between CANL and E1 Between CANN and E1
    Tester Range	1 V/DIV., 10 μs/DIV.
    Condition	Power switch on (IG)

    HINT: 

    The waveform varies depending on the CAN communication signal.

18. WAVEFORM 18 
    Fig 19: Waveform 18

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    COOLING FAN CONTROL SIGNAL
    
    

    ECM Terminal Name	Between RFC and E1
    Tester Range	1 V/DIV., 20 ms./DIV.
    Condition	Power switch on (IG), A/C switch on (max cool)

    HINT: 

    The wavelength becomes shorter as the engine coolant temperature.